Headache(DynaMed, EBSCOhost information retrieval system) This source includes general information on headache; causes and risk factors; complications and associated conditions; history and physical; diagnosis; treatment; prognosis; prevention and screening; quality improvement; guidelines and resources; patient information; ICD-9/ICD-10 codes; and references; along with related summaries concerning migraine (list of topics); migraine in adults; migraine in children and adolescents; migraine - treatment of acute attack; and tension headache.